House type dishwasher



Aug. 6, 1946. c, o, KAUFFMAN 2,405,147

HOUSE TYPE DISHWASHER Filed July 2'7, 1944 2 Sheets-Sheet 1 flrwsmfo'l. 060W @Wna/n/ EH Zi rg cqllomzy/ Aug. 6, 1946. c. o. KAUFFMAN HOUSE TYPE DISHWASHER Filed July 27, 1944 2 Sheets-Sheet 2 Patented Aug. 6, 1946 UNITEVD'TSTATES PATENT OFFICE HOUSE TYPE DISHWASHER Clayton 0. Kauffman, Fullerton, Calif.

Application July 27, 1944, Serial No. 546,778

6 Claims.

Y My invention relates to dish-washers, and more particular y to dish-washers u abl fo h hold use adapted to be set on the drainboard or in the sink, although it may be incorporated in a unit adapted to be built in or permanently installed. In either case, auxiliary attachments such as rinsing and scrubbing brushes are provided, and if the dish-washer is built-in may includea convenient foot pedal for control of the auxiliary attachments.

Among the objects of my invention are;

First, ,to provide a dish-washer of this type which insures a high velocity spray in all parts of the washer cabinet so as to insure thorough cleaning of the dishes and other utensils conta ned the n- Second, to provide a dish-washer of this type wherein the entire operating mechanism is arranged in a compact unit capable of installation in the head or cover of the cabinet, the operaing mechanism being simple and economical of construction, and readily serviced.

Third, to provide a dish-washer of this type which is entirely controlled and operated by water pressure.

Fourth, to provide a dish-washer of this type which incorporates a, novel soap supplying and dispensing means whereby the contents of the dish-washer may be first washed with high velocity soapy water and thereafter rinsed.

Fifth, to provide a dish-washer of this type which is on the Whole novelly constructed and arranged.

Further objects of the invention will appear hereinafter.

The invention consists in the novel parts and combination of parts tobe described hereinafter, all of which contribute to produce an efficient house type dish-washer.

' A preferred embodiment of the invention is described in the following specification, while the broad scope of the invention is pointed out in the appended claims.

Referring to the drawings:

Fig. 1 is a longitudinal sectional view of a dishwasher cabinet with -a dish-rack therein, and showing the operating or spraying mechanism in elevation.

Fig. 2 is an enlarged-plan view of the cover plate for the operating mechanism, the surrounding cabinet cover being shown fragmentarily,

Fig. 3 is a further enlarged bottom view of the operating mechanism.

, Fig. 4 is a transverse sectional view of the operating mechanism taken through 4-4 of Fig. 1. N

Fig. '5 is a fragmentary sectional view through 5--5 of Fig. 1, showing the soap dispensing dei e 1 Fig. 6 is a substantially diagrammatical perspective view of a sink and drainboard with the dish-washing cabinet built in and showing the auxiliary attachments together with their foot pedal control.

The invention herein contemplated, is directed primarily to an apparatus which directs high velocity water streams to the dishes and other utensils contained in a rack in position to be washed by the streams of water. The apparatus is preferably enclosed in a cabinet I, which may be designed to sit on a drainboard or any sink, or to form a part of a unitary dish-washing ma.- chine mounted on its own supports or built in as a permanent kitchen fixture.

The cabinet comprises a bottom pan 2 having a suitable drain 3 and a complementary cover pan 4 to form an enclosure for the dishes and other utensils. Within the bottom pan is a rack structure 5 which includes a suitable dish holder '3, silverware holder I, and cup and glass holders 8. The rack structure is so arranged that the contents thereof may be readily washed by water streams directed from the central portion of the cover pan 4.

The central portion of the cover pan 4 is provided with an opening which is closed by a cover plate structure H. The cover plate structure includes a base member [2 and a top member [3. The top member is flat and parallel with the base member; its margins, however, bend downwardly and are flanged to rest on and be secured to the margins of the base member 12.

A pair of brackets l4 and I5 depend from the cover plate structure ll. These journal horizontally disposed stub shafts l6 and IT. The stub shafts are secured to the ends of a gimbal frame is. The gimbal frame is in the form of a rectangular loop and is provided at its mid portion with a cross shaft 19 which carries a spray wheel 20. The spray wheel is provided with a pair of flanges or baffles 2| each carrying a series of reaction blades 22.

The stub shaft i6 is provided with a worm gear 23 which is driven by a worm 213 mounted on a worm shaft 25 depending vertically from the cover plate structure. The upper end of the worm shaft is journaled in the cover plate structure, whereas the lower end is held by a bracket 28. A drive turbine orreactionwheel 21 in the form of a disc with peripheral reaction blades, is secured to the Worm shaft 25 adjacent the under side of the cover plate structure.

The cover plate structure is provided with a water intake tube 28 which extends through the cover plate structure and branches. One branch 29 communicates with a soap container shell 3:] which is set in the base member and projects downwardly. The branch 28 isconnected in the side of the soap containershell. Within the shell is a wire mesh soap cages! adapted to contain alirnited supply of-soap. The outer end of the 3 shell 30 is closed by a cover 32 which is accessible from the outside of the cover plate structure. A discharge tube 33 leads from the shell 30 and is joined to the extremity of the bracket [5, The bearing in the extremity of the bracket l which connection 34, and the stub shaft H is hollow so that water from the fixed discharge tube 33 passes through and into the stub shaft ll.

Nozzle tubes 35 and 36 lead from the stub shaft H to opposite sides of the spray Wheel 26 and are positioned so that the streams of water issuing therefrom impinge on the reaction blades 22, hit baffles 28, and are sent radially in a blade form of spray.

A branch 31 leads from the water intake 28 along the under side of the base member I2 to a valve 38 supported from the base member l2 and having a handle 39 accessible from the upper side of the cover plate structure. A turbine nozzle tube 40 continues from the valv 33 to the turbine 21.

The top member [3 is provided with wells 4|, 42, and 43, which accommodate respectively the cover 32 of the soap container, the handle 39 of the valve, and a tell tale wheel 44 provided on the upper end of the worm shaft 25.

Operation of-my dish-washer is as follows: Water introduced through the water intake 28 passes in part through the soap container, entraining soap therewith and discharging the soapy water against the reaction blades 22 of the spray wheel 28, thereby causing the'spray wheel to rotate at high velocity and throw a tangential spray. Simultaneously, a portion of the water passes through the valve 38 to the turbine or reaction wheel 21, causing this wheel to rotate the gimbal frame about the axis of the stub shafts 5 and ll. By reason of the worm drive the gimbal frame rotates comparatively slowly and causes the tangential spray from the spray wheel 29 to be directed into all parts of the dish-washer.

The valve 38 regulates the speed with which the gimbal frame is caused to rotate, thereby controlling the rate at which the spray stream from the spray wheel 20 traverses the contents of the cabinet.

The soap container is designed to hold the proper amount of granulated soap for adequately washing the dishes. When this quantity is used up, clear water issues from the nozzle tubes 35 and 36 and is sprayed by the spray wheel over the contents of the cabinet to rinse the same. It should be understood that the term soap as herein used, is employed in the popular sense and is intended to include any detergent or cleansing material whether or not it is technically a soap. For example, materials known commercially as Oakite or Turgo have been found satisfactory.

In Fig. 6 a cabinet 5| is shown set in a drainboard 52. The cabinet is provided with a lid 53 which carries the spraying unit hereinbefore described. A-sink 54 is located at one side of the cabinet 5! and between the sink and cabinet is provided a compartment 55 preferably equipped with a lid 55. Within the compartment is a main control valve 51 for the spraying unit. In addition, the compartment 55 accommodates a hose 58 supplied through a valve 59 which is connected by a cable means 6| to a foot pedal 62. Several attachments such as a spray nozzle-63 and spray brush 64 shown on the drainboard in Fig. 6, may

be attached to the hose.

The spray brush B4 is used to remove or loosen 4 tightly clinging particles from the pots and pans. The spray nozzle is preferably used after the spraying unit has completed its cycle to insure a complete rinsing.

Many other embodiments of the invention may be resorted to without departing from the spirit of the invention.

I claim:

1. A spraying mechanism for dish-washers comprising: a gimbal frame adapted to rotate about a horizontal axis; a spraying wheel journaled about an axis transverse to said gimbal frame axis whereby said spraying wheel is simultaneously rotatable about its own axis and about the axis of said gimbal frame; means for supplying water to said gimbal frame; means carried by said gimbal frame and rotatable therewith for directing a stream of water against said spraying wheel whereby the water is thrown tangentially therefrom; and means for rotating said gimbal frame.

2. A spraying mechanism for dish-washers comprising: a gimbal frame adapted to rotate about a horizontal axis; a spraying wheel journaled about an axis transverse to said gimbal frame axis whereby said spraying wheel is simultaneously rotatable about its own axis and about the axis of said gimbal frame; means for supp ying water to said gimbal frame; means carried by said gimbal frame and rotatable therewith for directing a stream of water against said spraying wheel whereby the water is thrown tangentially therefrom; and a hydraulically operated means for rotating said gimbal frame, including a reaction wheel and speed reducing gearing.

3. A spraying mechanism for dish-washers comprising: a mounting plate adapted to be set in the head of a dish-washer cabinet over dishes stacked therein; a frame suspended from said mounting plate and journaled about a horizontal axis; a spraying wheel journaled in said frame about a transverse axis; means for directing a water stream against said spraying wheel for spinning said wheel in its frame at high speed; and means for turning said frame about its axis at a reduced speed.

4. A spraying mechanism for dish-washers comprising: a mounting plate adapted to be set in the head of a dish-washer cabinet over dishes stacked therein; a pair of supports depending from said mounting plate; a frame iournaled about a horizontal axis between said supports and including a hollow journal connected to a source of water supply introduced through one of said supports, and nozzle tubes extending from said hollow journal; a spraying wheel journaled in said frame about a transverse axis and positioned for impinging engagement by water discharging from said nozzle tubes and thereby rotated at high speed; and means for turning said frame at a lower speed.

5. A spraying mechanism as set forth in claim 3, wherein said frame turning means comprises: a turbine wheel; a nozzle communicating with a source of water and directed against said Wheel; and a reduction gear drive connecting said wheel with said frame.

6. A spraying mechanism as set forth in claim 4, wherein said frame turning means comprises: a turbine wheel; a nozzle communicating with a source of water and directed against said wheel; and a reduction gear drive connecting said wheel with said frame.

CLAYTON O. KAUFFMAN. 

